Good morning,
yes, the "draft" really strongly resembles a Sims house. Personally, I would work with real wall thicknesses to get a feel for the actual house. Indeed, I can't imagine living in these rooms lined up one after the other. It has little spirit and homeliness. It starts at the entrance, goes past this narrow spot by the kitchen into an open space with a computer room, to that oh yes the living room is still attached. Then the window arrangement. I don't want to imagine how it might look with the roof on. Is that a training room at the bottom left? What does the room in front of it without windows represent? Also, a huge bathroom with two doors in a single-person household?
One could go on. Unfortunately, for me it’s a 5, as harsh as that sounds. Take a look at a few floor plans. Also topics here in the forum to get a basic understanding of functional rooms. What makes sense and what doesn’t. I can recommend Feng Shui; it is very interesting and gives many suggestions and ideas. You have to keep in mind that a house not only has to function but also should be your home, where you want to feel comfortable even years later. With such planning mistakes, it can and will definitely go wrong.
This can really only serve as a guideline for what should be done right in later planning.
Good luck going forward
best regards